Spacecraft are evolving towards larger size， lighter weight， and greater intelligence. Composite thin-walled deployable structures can meet the requirements for high packaging ratio and high precision. This paper introduces the characteristics and current application of several composite thin-walled deployable structures used in spacecraft. It also summarizes the recent advances in composite material systems， prepreg preparation processes， structural molding technologies， and performance testing. Finally， recommendations are proposed for the future development of composite technology based on thin-walled deployable structures.